A compound mechanism full-flow circulation supersonic propulsion system and its working method

Abstract

The present invention proposes a composite mechanism full-flow cycle supersonic propulsion system and its working method, including an air inlet, a compressor, a diffuser duct, a shaft, an open pre-combustion driver, a closed pre-combustion driver, a turbine, a post-combustion Thruster, tail nozzle; the inlet, compressor, shaft, turbine, afterburning thruster, and tail nozzle are connected in sequence; the compressor and turbine are connected through a shaft; the turbine is located on the side of the inlet of the afterburning thruster, The tail nozzle communicates with the outlet of the afterburner thruster; the open pre-combustion driver and the closed pre-combustion driver are located behind the compressor, and the outlet is facing the turbine; the open pre-combustion driver and the closed pre-combustion driver are alternately distributed on the outer ring of the shaft Into the expansion duct of the space. The system maximizes the propulsion advantages of each subsystem in terms of specific impulse and thrust-to-weight ratio, so as to realize the rapid self-starting of the propulsion system, multi-degree-of-freedom, compound working mechanism, efficient and economical supersonic combined propulsion system.

Description

technical field [0001] The invention relates to the technical field of supersonic propulsion, in particular to a composite mechanism full flow circulation supersonic propulsion system and a working method thereof. Background technique [0002] In recent years, with the advancement of science and technology and the traction of military needs, the near space has gradually attracted the attention of various countries because of its potential military and civilian value, and various countries have carried out a series of research on the near space. The propulsion system of a near-space vehicle not only requires the ability to freely enter the adjacent space, but also requires the ability to cruise at high altitude and high speed. At the same time, the propulsion system of a near-space vehicle should have high performance, light weight, high reliability, low cost, long range, and boost-free , Reusable, adaptable to a wide range of speed and so on. [0003] Existing propulsion sy...

AI Technical Summary

Problems solved by technology

However, the combined engines currently under development, no matter TBCC or RBCC engines, have the problem of discontinuous thrust during the working mode conversion process of different cycles; moreover, the structure of the mode conversion device is relatively complicated, which leads to the failure of the combined engine. Increased weight, which brings many disadvantages such as reduced payload and increased fuel consumption of the aircraft

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